Nondestructive Evaluation of 2 by 10 Southern Pine Lumber

IF 1.1 4区农林科学 Q3 FORESTRY

Forest Products Journal Pub Date : 2023-05-01 DOI:10.13073/fpj-d-22-00054

M. G. C. Uzcategui, F. França, R. D. Seale, C. A. Senalik, R. Ross

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引用次数: 0

Abstract

Efficient use of the available wood resources is necessary to sustainably meet the long-term demand for wood products. This paper presents research about the potential of using transverse and longitudinal vibration techniques to evaluate the bending modulus of elasticity MOE (Eb) and tensile properties (Et and UTS) of 2 by 10 No. 2 grade southern pine (Pinus spp.) lumber. A total of 285 lumber pieces were first nondestructively tested using longitudinal vibration (Director HM 200), transverse vibration (Metriguard E-computer), and proof-loading bending tests (Universal Instron Machine). Each specimen was then destructively tested in tension parallel to the grain to determine tension modulus of elasticity (Et) and ultimate tensile stress (UTS). Correlations between growth characteristics, physical, and mechanical properties were analyzed. Excellent correlative relationships between longitudinal and transverse dMOE with the elastic properties Eb, and Et were found. A strong correlation was also found between the elastic properties Eb and Et. The prediction of Eb was improved after adding density to the model. The estimation of UTS was also improved with the addition of density and a secondary nondestructive measurement. Nondestructive techniques are recommended to assess the mechanical properties of southern pine 2 by 10 lumber.

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2 × 10南松材的无损评价

有效利用现有木材资源是可持续满足木材产品长期需求的必要条件。本文研究了利用横向和纵向振动技术评估2×10 2级南方松（Pinus spp.）木材弯曲弹性模量MOE（Eb）和拉伸性能（Et和UTS）的潜力。首先使用纵向振动（Director HM 200）、横向振动（Metricuard E-computer）和验证载荷弯曲测试（Universal Instron Machine）对总共285块木材进行了无损测试。然后在平行于晶粒的张力下对每个试样进行破坏性测试，以确定拉伸弹性模量（Et）和极限拉伸应力（UTS）。分析了生长特性、物理性能和机械性能之间的相关性。纵向和横向dMOE与弹性性能Eb和Et之间存在良好的相关性。弹性性能Eb和Et之间也存在很强的相关性。在模型中添加密度后，Eb的预测得到了改进。通过增加密度和二次无损测量，UTS的估计也得到了改进。建议采用无损技术来评估南方松2×10木材的机械性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Forest Products Journal 工程技术-材料科学：纸与木材

CiteScore

2.10

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Forest Products Journal (FPJ) is the source of information for industry leaders, researchers, teachers, students, and everyone interested in today''s forest products industry. The Forest Products Journal is well respected for publishing high-quality peer-reviewed technical research findings at the applied or practical level that reflect the current state of wood science and technology. Articles suitable as Technical Notes are brief notes (generally 1,200 words or less) that describe new or improved equipment or techniques; report on findings produced as by-products of major studies; or outline progress to date on long-term projects.